This is a follow-up to my previous post about putting an A604 transmission into limp mode. Back then I thought for sure there was a clutch problem or some kind of serious mechanical failure going on. Back when I made this video I mentioned that I thought it was the torque converter (which it actually wasn't). Listen to how it grinds away!
This whole issue ended up being solved simply by cleaning the contacts for the solenoid connector!
It's shown here with its cover off. Inside the connector's receptacle on the transmission there was a little rust, and with a wire brush I was able to clean off all the oxidation.
It's been running fine for a week now, having gone over 300 miles with no issue.